The Bronica C (and I happen to be selling one *cough, cough*) does this, too. You just set it to double exposure and you can keep making shots on the same frame--you just have to recock the shutter. The Rolleicord (IIIa, don't knkow about the others) does this, too--just keep cocking and firing the shutter and don't advance the film.

How about a Holga, it will do it, too